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Materials 2018, 11(9), 1639; https://doi.org/10.3390/ma11091639

Effects of Pore Size on Fatigue Deformation Mechanism of Open-Cell Copper Foam at Low Stress Amplitude

1,2
,
1,2
,
1,2,3,* , 1,2
and
1,2
1
School of Energy and Power Engineering, Changsha University of Science & Technology, Changsha 410014, China
2
Key Laboratory of Energy Efficiency and Clean Utilization, Education Department of Hunan Province, Changsha University of Science & Technology, Changsha 410014, China
3
Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, China
*
Author to whom correspondence should be addressed.
Received: 22 July 2018 / Revised: 28 August 2018 / Accepted: 3 September 2018 / Published: 6 September 2018
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Abstract

Axial compression-compression fatigue experiments on open-cell copper foams with different pore size were investigated in this paper. The effects of the strain amplitude on the fatigue properties were studied and found that there is an exponential relationship between the fatigue life and strain amplitude. The experimental results indicate that a smaller pore size is related to a lower fatigue life. The microstructures of failed copper foam tested at low stress amplitude were observed by optical microscope and scanning electron microscopy (SEM), suggests that different pore size related to different fatigue behavior. The fatigue failure mechanism of the open-cell copper foams were compared by experimental research. View Full-Text
Keywords: open-cell copper foam; pore size; failure mechanism open-cell copper foam; pore size; failure mechanism
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Chen, J.; Dai, S.; Li, C.; Li, W.; Ren, Y. Effects of Pore Size on Fatigue Deformation Mechanism of Open-Cell Copper Foam at Low Stress Amplitude. Materials 2018, 11, 1639.

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